自定义Dialog

[android]代码库
package com.yx.straightline.widget;
 
import com.yx.straightline.R;
 
import android.app.Dialog;
import android.content.Context;
import android.os.Bundle;
import android.view.Display;
import android.view.Gravity;
import android.view.KeyEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.TextView;
 
public class AlertDialog extends Dialog implements OnClickListener {
 
    private TextView tv_title, tv_message;
    private IBaseDialogListener dialogListener;
 
    private View titleLayout;
 
    private String title, message, left, right;
 
    public AlertDialog(Context context) {
        super(context);
        this.dialogListener = (IBaseDialogListener) context;
    }
 
    public AlertDialog(Context context, String message) {
        super(context);
        this.message = message;
        this.dialogListener = (IBaseDialogListener) context;
    }
 
    public AlertDialog(Context context, String title,
            String positiveButtonText, String negativeButtonText) {
        super(context);
        this.title = title;
        this.left = positiveButtonText;
        this.right = negativeButtonText;
        this.dialogListener = (IBaseDialogListener) context;
    }
 
    public AlertDialog(Context context, String title, String message,
            String positiveButtonText, String negativeButtonText) {
        super(context);
        this.title = title;
        this.message = message;
        this.left = positiveButtonText;
        this.right = negativeButtonText;
        this.dialogListener = (IBaseDialogListener) context;
    }
 
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        setContentView(R.layout.dialog_layout);
        tv_title = (TextView) findViewById(R.id.tv_dtitle);
        tv_message = (TextView) findViewById(R.id.tv_message);
        titleLayout = findViewById(R.id.title_layout);
 
        findViewById(R.id.ll_dlayout).setVisibility(View.VISIBLE);
        Button btn_left = (Button) findViewById(R.id.btn_dleft);
        Button btn_right = (Button) findViewById(R.id.btn_dright);
 
        btn_left.setText(left);
 
        btn_right.setText(right);
 
        btn_left.setOnClickListener(this);
        btn_right.setOnClickListener(this);
 
        titleLayout.setVisibility(View.VISIBLE);
        tv_title.setText(title);
 
        if(message != null&&!message.equals(""))
        {   tv_message.setVisibility(View.VISIBLE);
            tv_message.setText(message);
        }
 
        windowDeploy();
    }
 
    public interface IBaseDialogListener {
 
        public void onPositiveButtonClicked(View v);
 
        public void onNegativeButtonClicked(View v);
 
    }
 
    @SuppressWarnings("deprecation")
    public void windowDeploy() {
        Window window = getWindow(); // 得到对话框
        window.setBackgroundDrawableResource(R.color.transparent);
        WindowManager.LayoutParams wl = window.getAttributes();
        wl.type = WindowManager.LayoutParams.TYPE_SYSTEM_ALERT;
        wl.gravity = Gravity.CENTER;
        WindowManager m = window.getWindowManager();
        Display d = m.getDefaultDisplay(); // 为获取屏幕宽、高
        wl.width = d.getWidth();
        wl.height = d.getHeight();
        window.setAttributes(wl);
    }
 
    @Override
    public void onClick(View v) {
        switch (v.getId()) {
        case R.id.btn_dleft:// 确定按钮点击
            dialogListener.onPositiveButtonClicked(v);
            break;
        case R.id.btn_dright:// 取消按钮点击
            dialogListener.onNegativeButtonClicked(v);
            break;
        default:
            break;
        }
        dismiss();
    }
 
    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        if (keyCode == KeyEvent.KEYCODE_BACK) {
            return true;
        }
        return false;
    }
 
    @Override
    public void dismiss() {
        super.dismiss();
        title = null;
        message = null;
        left = null;
        right = null;
    }
 
    public AlertDialog setTitle(String title) {
        this.title = title;
        return this;
    }
 
    public AlertDialog setMessage(String message) {
        this.message = message;
        return this;
    }
 
    public AlertDialog setPositiveButtonText(String text) {
        this.left = text;
        return this;
    }
 
    public AlertDialog setNegativeButtonText(String text) {
        this.right = text;
        return this;
    }
 
    public void show(IBaseDialogListener dialogListener) {
        this.dialogListener = dialogListener;
        show();
    }
     
    public void registerListener(IBaseDialogListener listener)
    {
        dialogListener = listener;
     
    };
}
 
说明：可以在Activity中实现接口，也可以在注册接口
知识点：通知；A通知B，B中有A，给A赋值
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